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Authors
Liu, Jianghong https://orcid.org/0000-0002-8405-6153
Au Yeung, Chun Yee Natalie
Leung, Patrick W. L.
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Funding
Funding for this research was provided by:
National Institute of Environmental Health Sciences/NIH/NIEHS grants (K01-ES015877, K02-ES-019878 and R01-ES-018858)
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Article History
Accepted: 8 July 2018
First Online: 18 August 2018
Compliance with Ethical Standards
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: The study was approved by the Institutional Review Board of the University of Pennsylvania (reference number: 811114) and the Ethical Committee for Research at Jintan Hospital, China.Both mothers and teachers provided a written consent form, and children provided verbal consent to the study.
: The authors declare that they have no competing interests.
